. >> cornell, your energy in saying this tonight was not what the president's energy was last night and the president's showing today energy on the campaign trail that he didn't show last night. i'm just curious to know why you think he didn't show it last night. why not say that is a lie, that is factually incorrect. >> the problem is if you're the challenger, you have to go out there and have a great debate, especially if you're a challenger behind, you have to go out and take it to the incumbent. if you are in fact the incumbent, you help the challenger by getting down in the mud and brawling. if you're the incumbent who is ahead, the last thing you want to do is get down in the mud and brawl with the challenger, because ultimately, strategically, that only helps the challenger. i think the president was very presidential last night. he laid out his case. he stayed on the facts. he did what he was supposed to do. >> ralph, you don't believe he was shifting his position or arguing something else on that stage last night that is different from what he's been saying on the campaign trai